Successful implementations of model-based BC algorithms have been obtained for a hitting-a-ball task with an underactuated robot [1]}, playing video games [2]} and controlling a UAV through a real forest [3]}. Model-free BC algorithms have been implemented for autonomous RC helicopter flight using experts demonstrations [4]} and for learning tasks, such as tennis swings  [5]}, ball-paddling [6]} and human-robot collaborative motions in tool-handover tasks [7]}, autonomous knot-tying using a surgical robot [8]} and character animation [9]}.
